Final answer:
Kuba most likely sees the concentration camp Majdanek from his window due to its proximity to a populated area and visibility from an urban setting, in contrast to more remote camps like Sobibor, Treblinka, and Bergen-Belsen.
Step-by-step explanation:
The concentration camp that Kuba most likely sees from his bedroom window is Majdanek. Majdanek was a concentration and extermination camp built on the outskirts of the city of Lublin, Poland. Unlike other camps that were located in remote areas, Majdanek was near a major urban area, making it visible to the local civilian population.
Auschwitz, also known as Auschwitz-Birkenau, was the largest of the Nazi death camps and a complex of camps which included a concentration camp, an extermination camp, and a labor camp. It was located in occupied Poland and was responsible for the deaths of around 1.1 million people, most of whom were Jewish.
While camps like Sobibor, Treblinka, and Bergen-Belsen were also part of the Nazi camp system, Majdanek's proximity to a populated area and its visibility from Kuba's window make it the most likely camp observed by Kuba.